(Excerpt from the "PRESENTATION: Three Response Strategies and Networking" post.)
The most likely emergency that will prompt auto evacuation is a wildfire or quickly out of control series of house fires near you. I saw that happen in Tooele just a few years ago.
You must consider that flames could reach your home before firefighters could extinguish them. Your focus in such circumstance it to GET OUT IMMEDIATELY.
Sometimes, entire parts of cities get consumed so quickly, residents cannot safely exit with any belongings.